Pressure measurement is primarily intended for
regulating the air inlet pressure and monitoring air
filters. These filters clog more or less quickly
depending on their filtering power. Differential
pressure gauges also monitor overpressure and
underpressure in production rooms.

Differential pressure measurements in critical
environments are crucial to maintaining an
extremely low concentration of airborne
particles. These measurements are used by
control systems to effectively manage ventilation
in each zone. Our differential pressure sensors
are renowned for their exceptional performance.

A sensor in a built-in version also makes it
possible to monitor the confinement of an area
for the pharmaceutical industry or in hospitals in
order to avoid any atmospheric contamination.

Historically specialized in pressure
measurement, Sauermann offers all possible
solutions in the field: connected transmitters or
liquid column pressure gauges. The first digital
solution allows values ​​to be recorded over time
and remotely. The second liquid column solution
is particularly resilient because it is completely
autonomous: it does not require energy to
operate, and benefits from record durability.

According to the ISO 14644-3 standard, the
ventilation system of a clean room must be able
to maintain a temperature and hygrometry within
the limits imposed by their activity. These
constraints are intended to avoid common
inconveniences, such as expansion or contraction.

All Sauermann temperature sensors also
measure relative humidity. These sensor-
transmitters are used in all areas, particularly in
the pharmaceutical industry, where many production areas must comply with strict
environmental standards to preserve products.

These sensors are also present in many storage
and packaging areas in sensitive industrial
sectors such as health and high technologies.

The air renewal rate in each zone of a clean room
complex must be preserved by very finely
controlled air flows at entry and extraction. This
requirement is even more difficult to meet when
the purity of the indoor air is ensured by filters
which retain particles suspended in the air,
including bacteria and viruses. These filters
disrupt airflow, and can create turbulence or
reduce flow rates.

The most demanding clean rooms (ISO 1 to 5)
must benefit from a laminar air flow, without
turbulence, which optimizes the circulation and
renewal of air, while maintaining a pressure
stable enough to maintain excess pressure or
underpressure compared to the outside
atmosphere. Constant measurement of air flows
is therefore crucial to verify that the ventilation
system is perfectly balanced at all times.